Re: H264 and mpeg4 curveball

I doubt it has anything to do with your source. What are the specifics of your encode? Frame size, bit rate etc? One thing I would have to look out for is the size you are encoding to. If you have a 480i source, you should not expect it to look good encoding to 480p with Flash. If you encode to 480i WMV or MPEG-4, then it will likely look better, but given it is likely laden with graphics and cg material, any encode at web bit rates at 480 lines is stretching it. I would recommend you deinterlace the source while encoding and only encode to a maximum of 360 vertical lines.